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Software Security Backend Engineer
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on a software security platform for a global financial institution, emphasizing cybersecurity and open-source, cloud-native solutions. Key technologies include Python (Django), Node.js (TypeScript/NestJS), Go, Google Kubernetes Engine (GKE), Terraform, Pub/Sub, and PostgreSQL. Responsibilities cover designing and deploying scalable, secure backends, managing full service lifecycle on GCP, optimizing performance and security with OAuth2/OpenID Connect and Zero Trust. Automation and team mentoring are essential.

newyou can start ASAP

Software Security Backend Engineer

Company: Mindbox Sp. z o.o.

from: 28 July 2026
to: 27 August 2026
24 000 - 29 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland

Requirements

Expected technologies

Python
Django
Node.js
TypeScript
NestJS
Terraform
Go
PostgreSQL
Pub/Sub
GCP

Optional technologies

GitHub

Operating system

Windows

Our requirements

  • Deep expertise in Python (Django) and/or Node.js (TypeScript/NestJS), with a proven track record of shipping production-grade services
  • Hands-on experience with GCP services (Cloud Run, GKE, Filestore) and Infrastructure as Code (Terraform)
  • Ability to design and implement scalable, secure backend services with high-performance components in Go
  • Experience architecting with GKE, optimising PostgreSQL for high-concurrency, and building event-driven systems (Pub/Sub)
  • Knowledge of OAuth2/OpenID Connect; security-first mindset with practical experience of Zero Trust models
  • T-shaped engineering profile: broad full-stack understanding with deep backend expertise
  • Passion for automation, engineering excellence, and continuous learning; actively delivers code to production

Optional

  • Ability to spot a problem or opportunity and independently engineer a solution end-to-end
  • Thinks holistically about the impact of their work beyond immediate delivery
  • Open-source contributions, GitHub portfolio, or technology blog
  • Generalist mindset – comfortable applying engineering thinking across multiple domains, not just one specialisation

Your responsibilities

  • Designing and implementing scalable, secure backend services using Python (Django) and Node.js (TypeScript/NestJS), with high-performance components written in Go
  • Architecting for Google Kubernetes Engine (GKE), optimising PostgreSQL query performance for high-concurrency workloads, and building event-driven architecture with Pub/Sub
  • Owning the full lifecycle of your services on GCP, ensuring they are resilient, observable, and cost-efficient
  • Designing and managing OAuth2/OpenID Connect flows within GCP; treating security as a feature with Zero Trust models embedded from the start
  • Implementing Infrastructure as Code (Terraform) and always considering automation as a default approach – reducing toil and enabling faster, more secure delivery
  • Mentoring team members, building engineering communities that raise the bar on quality and efficiency, and constructively challenging existing thinking to develop better paths forward
  • Staying ahead of industry shifts (Go, Rust, TypeScript) and guiding the engineering community on evolving trends
  • Note: Detailed project information will be shared during the recruitment process.

About the project

Join our client's team, where you'll play a key role in shaping a next-generation Software Security platform at one of the world's leading global financial institutions. Your contribution will help deliver high-impact solutions in cybersecurity – open-source, cloud-native security services built in-house and running at enterprise scale.
You'll step in as a Software Security Engineer – Backend, working closely with cross-functional agile teams in the Security space to drive technical delivery and best-in-class design and code. Your role will be central to moving away from high-cost vendor platforms toward open-source, cloud-native solutions with a high degree of automation – not just execution.
Sounds like your kind of challenge?

This is how we organize our work

This is how we work

at the client's siteagilescrum

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration
  • DevOps
  • issue tracking tools
  • testing environments
Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.
Company

What we offer

  • Flexible cooperation model – choose the form that suits you best (B2B, employment contract, etc.)
  • Hybrid work setup – 6x/month from the office in Kraków
  • Collaborative team culture – work alongside experienced professionals eager to share knowledge
  • Continuous development – access to training platforms and growth opportunities
  • Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
  • High quality equipment – laptop and essential software provided

Benefits

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of professional training & courses
  • life insurance

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.
Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.
Software Security Backend Engineer
24k–29k zł / mth. (B2B)
I apply to:
Mindbox Sp. z o.o.
Kraków, Lesser Poland
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